E3 Spark Plugs proudly presents the E3.31, a 14mm, 0.750” reach plug featuring a gasket seat – meticulously crafted for an array of powersport applications, particularly in snowmobiles and Personal Watercraft. Engineered to endure the unique demands of these applications, the E3.31 is a testament to our commitment to precision and performance.

This spark plug is equipped with the patented DiamondFIRE ground electrode, securely fastened to the shell with two legs. This design not only facilitates efficient heat transfer but also ensures durability against the intense vibrations inherent in powersport engine applications. The E3.31 is your reliable choice for enduring performance, meeting the demands of snowmobiles and Personal Watercraft.

The unique DiamondFIRE side wire, proven to enhance power, reduce fuel consumption, and improve hydrocarbon emissions over extended use, further solidifies the E3.31 as the spark plug of choice for powersport enthusiasts. The E3 ground electrode and full-size center electrode contribute to optimal performance throughout an extended product life.

Simplify your spark plug replacement process – the E3.31 effortlessly replaces a variety of competitors, including:

CHAMPION: RN2C, RN3C, RN57YC

NGK: BR8ES, BR9ES, BPR8ES, BPR9ES

Choose E3 Spark Plugs for an unparalleled blend of precision engineering and enduring performance. Elevate your powersport experience with the E3.31 – where innovation meets reliability for sustained excellence in snowmobiles and Personal Watercraft.